the flash-flood warning includes the entire city of petaluma within the last half hour. local stream gages showed levels at or above flood stage. this comes at the first winter storm of the season is bringing high winds and widespread rain around the area. there is a wind advisory until 1:00 this afternoon. you can see the roads here to lake tahoe, covered in ice and snow. chains are required on highway 50, and crews are warning drivers headed up to the mountains to be prepared, have your chains handy and drive slowly and cautiously. elizabeth has more details on what to expect the rest of the day. >>> yes. flooding reports coming in. parts of the great highway shut down. no surprises at sfo with delays up to two hour, especially on arrivals. this is the reason why. hi-def doppler has been lighting up since overnight. this is the worst of it this morning. slowly tapering off into the afternoon and evening. we should be dry by christmas eve. the heaviest cells right now are moving over the north bay. the flash-flood warning is issued for parts of sonoma county, including